Re: [uClinux-dev] Kernel 2.6 size increase

From: Willy Tarreau (
Date: Wed Jul 23 2003 - 17:27:47 EST

Hi !

On Thu, Jul 24, 2003 at 12:07:15AM +0200, Bernardo Innocenti wrote:
> text data bss dec hex filename
> 633028 37952 134260 805240 c4978 linux-2.4.x/linux-Os
> 819276 52460 78896 950632 e8168 linux-2.5.x/vmlinux-inline-Os
> ^^^^^^
> 2.6 still needs a hard diet... :-/

I did the same observation a few weeks ago on 2.5.74/gcc-2.95.3. I tried
to track down the responsible, to the point that I completely disabled every
driver, networking option and file-system, just to see, and got about a 550 kB
vmlinux compiled with -Os. 550 kB for nothing :-(

I don't have the config nor the exact numbers right here now, but I can
redo the tests on 2.6.0-test1 if needed.

I was interested in using a very minimal pre-boot kernel with kexec which would
automatically select a valid image among several ones. But 500 kB overhead for
a boot loader quickly refrained me...


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